Our combi has been working ok over the summer providing hot water on demand.
Worked ok for the cold snap a few weeks ago.
But now it will only run for 25-30 mins before the flame goes out (water up to temp?). This seems to be as it was before. However the boiler never re-ignites if we leave it running.
If I switch the boiler off then back on the boiler re-ignites and heats for 25-30 mins again.
If I switch the CH off then the DHW always works and re-ignites the boiler.
Any help appreciated.
Steve.
BTW I replaced the expansion vessel as after searching on the forum and running a few checks found that water was leaking out the air side of the EV.
Worked ok for the cold snap a few weeks ago.
But now it will only run for 25-30 mins before the flame goes out (water up to temp?). This seems to be as it was before. However the boiler never re-ignites if we leave it running.
If I switch the boiler off then back on the boiler re-ignites and heats for 25-30 mins again.
If I switch the CH off then the DHW always works and re-ignites the boiler.
Any help appreciated.
Steve.
BTW I replaced the expansion vessel as after searching on the forum and running a few checks found that water was leaking out the air side of the EV.